Scotopic vision in colour-blinds

نویسندگان

  • S. Verhulst
  • F. W. Maes
چکیده

Alleles causing colour-blindness are present in humans at non-negligible levels, and it is not yet understood how colour-blindness is maintained, since colour-vision probably provides a selective advantage, e.g. when foraging. We show that after dark-adaptation colour-blinds had lower light perception thresholds than colour-normals (0.44 log-units), which may give a selective advantage under scotopic conditions, which may offset the disadvantage that colour-blinds suffer during foraging.

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عنوان ژورنال:
  • Vision Research

دوره 38  شماره 

صفحات  -

تاریخ انتشار 1998